Fuse-block contact-post.



R. C: COLE. FUSE BLOCK CONTACT UST. PPLmATIoN FILED MAY 16, 1911.

*o #Patented Jan. i6, 1932 A nirnfo are narrante ROBERT C. COLE'OF `ilES' HARTFORD, CONNECTICUT, ASSIGNOR T0 JHIS-PRATT COMPANY, 0F RTFORD, CONNECTICUT, A CORORATON 0F CNNEC'ICUT Specification et Letters Patent.

FUSE-BLOCK CONTACT-POST.

Patented dan. litt, i912.

Application tiled May 16, 1911. Serial No. 627,517.

To all whom it may concern.' Be it known that I, ROBERT C. COLE, a citizen of the United States, residing at lNest Hartford, county of Hartford, and State of Connecticut, have invented the following described Improvements in Fuse-Block ContactPosts. l The invention. relates to fuse blocks of the type in which the fuse is supported on posts rising from a base-block, and especially to an improved construction of the posts and of the attachments of the posts to the block and to the fuse and line terminals. The object of the inventionis topprovide a fuse block post which shall have a minimum of material in its structure, and be simple and inexpensive to manufacture, but which may nevertheless be strong and du` yrable, easily and securely attachable to the base, and vof s'hch construction as to offery ample and irm contact between the fuse and line terminals; the whole being of few and simple parts, readily assembled, and of ornamental exterior appearance.

The objects of the invention will more fully appear by reference to the accompanying drawings in which:

Figure l isa side elevation view of an as- I 'sembled fuse block embodying the invention,

the fuse and'line terminals being shown connected to the block, and one endl of the block Y being shown in cross section on the axis of the post. Fig. 2 is a detail view ,showing a means for locking the post'against rotation on the base; and Fig. 3 a plan of one of the posts. l

The hollow ost-s l, stamped or otherwise formed from at sheet metal blanks in the form of inverted cups with Haring walls, rise from the base 2 y,at or near the ends ot vthe latter. At their' open lower ends each post is 'seated by its edge directly upon the base block and its upper end is closed eX- cept fn" a hole 3 centrally disposed in the s,.tpp wall 4.

"Jin eyelet orsi'milar hollow tubular mem- -ber 5 is passed. through the hole 3 and through a corresponding hole 8 in the porcelain base block, and is provided with a head at both ends whereby it serves to se.

' cure lthe-post tirmly in place. The headed lower end rests against a shoulder 7 formed by the countersink of thev hole 8 in the base block and is preferably covered with a plug of shellac, `17. The head at the upper end of the tubular member may rest directly upon the top wall of the post and can be formed by upsetting or spinning or in any other way which will bind the post with some pressure, to the porcelain base, the finish preferably being such as to form a tlat top surface on the post when the attachment is complete. To this end the top well 4 of the post is preferably dished to form a concavity to receive the head of the securing member, as shown in the drawings, and such head is, as a matter of preference, formed by spinning the eyelet over upon the top wall, as thereby a certain, degree of resilient pressure can be exerted on the hollow post which will hold the same to the vitreous base with greater firmness than a screw and nut and with less danger of fracture at the shoulder 7. I

lliiach tubular member is internally i. threaded to receive the binding screws 11 by which the flat terminals lll of the fuse4 12 and line terminals i3 are clamped to gether and upon the posts. Both the fuse and the line terminals are held by the screws in direct Contact with each other on the posts and the arrangement, it will be seen, permits the line terminals to be clamped in ymay he employed with or without washers,

as preferred. Either the base or the post is provided with a recess which accommodates a tongue or lug formed on the other, toy prev vent the loosening of the attachment be-` tween eyelet and post, or dislodgment of the shellac 17, by the turning of the postv upon the base. In the casefshown in 'the f drawings the recess 18 is`in the lower edge of the post, and the lug 19 is formedv on the base, but other formsof non-rotative bearf ings for the post will manifestly suffice for l A the same purpose.

Within the scope of the inventionfl'the l modified, in respect of the number andthel structure described above maybe variously location of the eyelets and, -incertain forms f l distinct Jfrom the means for securing' .'the

4of the invention, the means for securing the hollow sheet metal posts to the base maybe x 1 vmetal post rising specifically described.

. Claims.

1. In a fuse block, a base, a ho thereto, the post line terminals to the post; and may otherrance and llow sheet from the base andseeured having a central. tubular portion vor member threaded to reeeive the binding screw.

2. In a fuse block,

an insulating base, a

hollow post stamped from sheet metal rising from the base, and a tubular member which serves to secure the post to the which 1s lnternally threaded, and screw engaging said member.

base and a bmdmg 8. In a fuse block, a base, a hollow sheet thereto, an internallyY screw cooperating with the eyelet ing a terminal to the post.

4. In a fuse block,

. metal post rising from the base and secured threaded eyelet, and a for secura porcelain or vitreous base, a hollow pest stamped from sheet metal and rising from the base, and an let securing the post to the base.

5. In a fuse base'hloek, a hollow post stamped sheet metal blank and having in upset eye bloelr a porcelain4 or vitreous l up from a terloeking said base, and an upset eyelet seeuringsaid post to the base.

6. In a fuse block, a base, a hollow sheet metal post rising Yfrom the base, Va member for securing the post tothe hase, and a ineinber in threaded engagement with the post securing` member for clamping a terminal to the post.

7. In a :Eusebloeln a base, and a hollow ising from the base, one of said members having a lug projecting therefrom and the other ot' said members being recessed to receive said lug to prevent rotation of the post on the base.

8. In-a fuse block, a base, two hollow sheet t metal posts spaced aphrt on the base and i adapted to support a fuse between the same, and each post having an interior tubular l member and a binding screw threaded in b said member for securing a fuse terminal to engagement with l l l l sheet metal posft r the post.

In testimony specification in the presence of two witnesses.

C. COLE.

i Renner IVitnesses.:

I-IAZEL G. Buhrmann, DUNCAN C. Noonan.

whereof, I have signed this 

